LPV521MGX Datasheet, PDF (1/29 Pages) Texas Instruments – LPV521 Nanopower, 1.8V, RRIO, CMOS Input, Operational Amplifier

LPV521
www.ti.com
SNOSB14C – AUGUST 2009 – REVISED FEBRUARY 2013
LPV521 Nanopower, 1.8V, RRIO, CMOS Input, Operational Amplifier
Check for Samples: LPV521
FEATURES
1
•23 For V_S = 5V, Typical Unless Otherwise Noted
– Supply Current at V_CM = 0.3V 400 nA (Max)
– Operating Voltage Range 1.6V to 5.5V
– Low TCV_OS 3.5 µV/°C (max)
– V_OS 1 mV (Max)
– Input Bias Current 40 fA
– PSRR 109 dB
– CMRR 102 dB
– Open Loop Gain 132 dB
– Gain Bandwidth Product 6.2 kHz
– Slew Rate 2.4 V/ms
– Input Voltage Noise at f = 100 Hz 255
nV/√Hz
– Temperature Range −40°C to 125°C
APPLICATIONS
• Wireless Remote Sensors
• Powerline Monitoring
• Power Meters
• Battery Powered Industrial Sensors
• Micropower Oxygen sensor and Gas Sensor
• Active RFID Readers
• Zigbee Based Sensors for HVAC Control
• Sensor Network Powered by Energy
Scavenging
DESCRIPTION
The LPV521 is a single nanopower 552 nW amplifier
designed for ultra long life battery applications. The
operating voltage range of 1.6V to 5.5V coupled with
typically 351 nA of supply current make it well suited
for RFID readers and remote sensor nanopower
applications. The device has input common mode
voltage 0.1V over the rails, guaranteed TCV_OS and
voltage swing to the rail output performance. The
LPV521 has a carefully designed CMOS input stage
that outperforms competitors with typically 40 fA I_BIAS
currents. This low input current significantly reduces
I_BIAS and I_OS errors introduced in megohm resistance,
high impedance photodiode, and charge sense
situations. The LPV521 is a member of the
PowerWise^® family and has an exceptional power-to-
performance ratio.
The wide input common mode voltage range,
guaranteed 1 mV V_OS and 3.5 µV/°C TCV_OS enables
accurate and stable measurement for both high side
and low side current sensing.
EMI protection was designed into the device to
reduce sensitivity to unwanted RF signals from cell
phones or other RFID readers.
The LPV521 is offered in the 5-pin SC70 package.
Typical Application
VBATT = 3V o 2V @ end of life
CR2032 Coin Cell
225 mAh = 5 circuits @ 9.5 yrs.
Remote Sensor
VIN
Signal
+
60 Hz
10 M:
10 M:
270 pF
10 M:
270 pF
10 M:
10 M:
270 pF 270 pF
10 M:
VBATT
-
+
VOUT
60 Hz Twin T Notch Filter
AV = 2 V/V
To ADC
Signal × 2
(No 60 Hz)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerWise is a registered trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2013, Texas Instruments Incorporated